If you have windows open and your windows 7 gadets are hidden behind them you could bring them on top of the applications you use -- Windows Key + G

If you use two screens -- two helpful shortcuts areMoves the current windows to the left screen, when running dual monitors -- Windows Key + Shift + Left arrowMoves the current windows to the right screen, when running dual monitors -- Windows Key + Shift + Right arrow

There could be other shortcuts which you also might be using. Please let me know so that I could start using them as well.